The noble gas isotopic compositions imply that the subduction and exhumation of the CCSD HP-UHP rocks may be very quick, thus the mantle-crust interaction and isotopic exchange might be very limited.

稀有气体同位素组成研究证实CCSD及其周围HP-UHP变质岩曾经历的板块俯冲和折返过程非常快速，俯冲过程中的壳幔物质交换未能充分进行。

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